Mosin Rimlock, Need More Solutions!

Z

ZRTaylor

New member
Friendly greetings all.

I acquired a Mosin as my first rifle a little while back, and I've been enjoying shooting it. Now that the novelty has worn off and the itch to buy every accessory under the sun (which for the Mosin isn't many) has begun to abate, I've decided to settle down to improving my rifle's functionality and accuracy.

First on the list is a feeding issue that I've been battling regularly. I've been loading my stripper clips in a pyramid type space arrangement, rims like so:

****---****
**---**---**
---******---

When I feed the rounds in to the magazine, however, I get a rimlock four times out of five. This is only a problem with the top round. All other rounds cycle flawlessly regardless of rim ordering. My understanding is that with a properly functioning interrupter there is no mechanical reason for a Mosin to rimlock, regardless of the arrangement of the cartridge rims.

To combat this problem I ordered a full replacement spring kit from "buymilsurp.com" and replaced the interrupter spring. There was a marginal decrease in rimlock frequency, but it's still an unacceptably regular occurrence.

I'm at a loss for how to combat this problem. What should I be checking next in order to troubleshoot this problem so that I can move past reliability issues and get on with more interesting projects?
 
get the stripper clips that are actually mosin surplus. alot of the amazon ones are modern made and not exactly set up correctly according to the mosin websites.

if you have a true mosin stripper clip, when you insert the ammo, tip the top cartridge up slightly as you push the cartridges into the magazine. that is supposed to orientate things correctly
 
So am I to understand that there's nothing mechanically wrong with my rifle then, and that the issue is just an error in technique?
 
First on the list is a feeding issue that I've been battling regularly. I've been loading my stripper clips in a pyramid type space arrangement, rims like so:

****---****
**---**---**
---******---
Click to expand...

Is that the way the clips are supposed to be loaded?

I would think it would be loaded the same way as an Enfield, like this:

**__**__**
__**__**__
 
I'm no Mosin expert but on the Enfields its where you push down that dictates how the rims "jump" from the charger to the magazine. Is there a specific cutout on the gun somewhere that might indicate where the thumb is supposed to be placed?
Incidentally the shown stagger for Enfield clips isn't quite right, both chargers should be loaded exactly the same , even if it is a bit counter intuitive.
303ClipLoading.jpg
 
wog, I'd bet a stripper clip loaded like that and pushed into a Mosin would rimlock on the very first round: that rim is behind the rim of the second round, as is the third behind the fourth......
 
The whole purpose of the interuptor* is to eliminate rimlock by presenting one cartridge at a time to the bolt. It doesn't matter where the rims are in the clip or in the magazine. To check (using dummy rounds if possible), load two rounds, pushing them down into the magazine as far as they will go. Both rounds will be held by the interrupter; neither will be presented to the bolt. Now close the bolt. It will close on an empty chamber. When the bolt handle is turned down, you hear a click as the top round is released. Now open the bolt and notice that the top round is now in position to be picked up by the bolt, but has no spring tension on it; it is just lying there. Feed that round into the chamber and close and lock the bolt. Again you will hear a click as the next round is released. Open the bolt and extract and eject the chambered round. The second round is now presented to the bolt face for loading.

If the rifle doesn't work that way, something is wrong.

*The bottom "tail" of the ejector spring.

Jim
 
James K: Well, I've replaced the ejector spring, and there is still a malfunction, but only with the top round of a full magazine. Is there a way to adjust my interrupter to function properly, or was I simply sold an insufficient component?
 
wogpotter said:
Incidentally the shown stagger for Enfield clips isn't quite right
Click to expand...

That is the same as I posted. I used "___" for the rim, and "***" for spaces, the same way the OP did in his diagram.

And for what it is worth, I do just fine with stripper clips in a Mauser, Enfield or 1903, but never could get them to work worth a crap in a Mosin Nagant.

Maybe I need better clips, but it doesn't bother me all that much.
 
That is the same as I posted.
Click to expand...
We're having a miscommunication somewhere here. :confused:
You posted this:
**__**__**
__**__**__
Click to expand...
It should be both chargers set up the exact same, not reversed like your illustration seems to show?
So this would be correct
_-_-_
_-_-_
or
__**__**__
__**__**__
for both chargers. Your illustration seems to have the two reversed.
 
wog, I'd bet a stripper clip loaded like that and pushed into a Mosin would rimlock on the very first round: that rim is behind the rim of the second round, as is the third behind the fourth......
Click to expand...
That's why I posted the "not an expert in Mosin" disclaimer. It IS counter intuitive, even on an Enfield but surprisingly it is right & does work (on an Enfield).:eek:
 
It should be both chargers set up the exact same, not reversed like your illustration seems to show?
So this would be correct
Click to expand...

Ahh, I see the problem.

My diagram, crude as it is with ASCI characters is only one charger. Ignore the ***, the rims are ___

Yours is better, on a single line, nothing but rims: ___---___---___
 
I will say this again. You can draw all the pictures you want, but it shouldn't matter how the rounds are positioned in an M-N clip. The M-N is (big surprise!) NOT a Lee-Enfield. It doesn't matter how the rims sit in the magazine. Repeat, it is NOT a Lee-Enfield. If properly functioning, the mechanism will release only one round at a time, so rimlock is not going to happen.

If the interrupter doesn't work, it might be due to the stock getting in the way, to dirt or grease, or broken, bent or worn parts, or to out-of-spec parts. I don't know without seeing the rifle. One test is to take the rifle out of the stock, put the bottom metal back on, then test the action. If it works, check to see where the stock is interfering. (That has been a common problem with rifles that have been put together out of parts.)

Jim
 
By George, I do believe James K is right!

A bit of investigation shows me that the top round in the magazine is indeed floppin' around loose in there, while the ones below are held down by that interupter dealy .... until the bolt closes.
 
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